The insect respiratory system operates by passive exchange of gasses through tiny holes called spiracles in their abdomen.
respiratory system of gold fish
The respiratory system works hand-in-hand with the cardiovascular system to circulate oxygen around the body.
tracheal system
tracheal system
I think it is Respiratory System...
The respiratory system
The circulatory system distributes oxygen to body tissues as it works with the respiratory system. It also helps bring carbon dioxide back to the lungs so that it can be expelled.
It works with the respiratory system especially the lungs.
a narwhals respiratory system is the inside works of the narwhal such as breathing (lungs),etc.,etc.
Respiratory system works with digestive system ,circulatory system ,excretory system (indirectly through circulatory system...
The work together by.....
it helps him in different works